There are plenty of problems in the world, many of them interconnected. But there is no problem which compares with this central, universal problem of saving the human race from extinction

Somehow we find it hard to sell our values, namely that the rich should plunder the poor.

A man's accomplishments in life are the cumulative effect of his attention to detail.

The U.S. has no friends, only interests.

Of all tasks of government the most basic is to protect its citizens against violence.

I'm making progress if today's problems are different from yesterday's.

If you are scared to go to the brink, you are lost.